The IT industry is full of jargon and terminologies that anyone in the field should know. Abbreviations make it easy to communicate and talk with people, they can easily express complicated topics in a few words and enable efficient communication among team members. 

Whether you’re a junior IT guy or you want to get into network administration, below are some network abbreviations and terminologies that are most common in the world of networks and the IT industry.


It’s a big network that connects all computers in the world together


It's any part of the Internet, only specific authorized access is granted to a few individuals


A network security device or a piece of hardware designed to prevent unauthorized access to or from a network, and block certain types of traffic.

IP Address

The internet protocol is a communication protocol through which networks and computers in networks communicate and share files. Each device in the network (even the router) has an IP address, by which other computers identify this device in the network.


A gateway is a node or a router in your network that connects two networks with different transmission protocols together. It could be a piece of software or hardware that allows data to flow from one network to another network.


PTSN refers to the Public Switched Telephone Network, and it’s often referred to as the traditional circuit-switched telephony network. Today’s telephony systems have been shifted from traditional, copper wires landlines to VoIP technology. 


Uniform Resource Locator is basically a web address, and it references a web resource that specifies its location on a computer network and a mechanism for retrieving it


File Transfer Protocol is a communication protocol used for the transfer of computer files from a server to a client on a computer network.


VoIP, Voice over Internet Protocol, is the recent communication technology for communication telephony systems that replaced PSTN phone systems.

Read more on VoIP and call center terminologies in this article!


VPN stands for Virtual Private Network, and it’s network technology provides secure and safe access to the internet and enables you to connect multiple branches together no matter where they are physically located.

Read more on how VPN services will help your business operate safely and efficiently!


WAN refers to Wide Area Network, and basically, it’s a telecommunications network that extends over a large geographic area. It’s a collection of local-area networks (LANs) or other networks that communicate with one another, and the Internet itself is a WAN.


Internet Service Provider

A company that provides Internet services to customers. For example, Zain and STC in the KSA are ISP.


Local Area Network

LAN is basically a computer network that connects computers within a limited area such as a school, college, or a company.


It’s computer software that provides low-level control for a device's specific hardware. BIOS setting on your PC is an example of the firmware.


Load balance is a network technology that can be used to balance your traffic through multiple internet connections to increase internet speed and reduce network downtime.


CCTV refers to Closed-circuit Television and is widely known as video surveillance, and it’s the use of cameras to transmit a signal to a specific place, on a limited set of monitors. 

Access Point

An access point is a networking hardware device that allows other Wi-Fi devices to connect to a wired network. It provides Wi-Fi access to a designated area. For example, if you want to expand Wi-Fi coverage to cover the whole office, you might want to consider using an access point.


Power over Ethernet is a technology that allows the supply of electricity over standard Ethernet cables.


A piece of hardware that connects all your digital devices using Ethernet cables-- printers, mobile phones, computers-- to make it easy to share information and resources between connected devices in your local area network. Browse different models of switches on Modn Store!


A digital subscriber line is a group of technologies that are used to transmit digital data over telephone lines.


Abbreviations and terminologies make it easier for us to communicate, and express complicated concepts in a few words or letters, and the IT and Network industry is full of abbreviations for any beginner. In this article, we discussed the good-to-know list of network terminologies and the most accepted and valid definition for each one. For more information about our Network services, head to the Network page on our website.

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